Tips for a new camper
Utah, Idaho, Wyoming, Colorado?
You don't say what direction you will be coming from so I'll try just for the area listed.
Wyoming: Yellowstone Park, Teton Park, Cody, the Bighorn Mtns., in July Cheyenne Frontier Days, the Snowy Range Mtns., Devil's Tower,
Colorado: Rocky Mtn. Park, Pike's Peak, Mesa Verde, Royal Gorge, Leadville, Granby, Garden of the Gods,
Utah: Great Salt Lake, Bryce Canyon NP, Zion NP, Capitol Reef NM,
That should give you a few things to consider.